<div class="refentry" lang="en" xml:lang="en"><a id="glXQueryExtensionsString"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glXQueryExtensionsString — return list of supported extensions</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table><tr><td><code class="funcdef">const char * <b class="fsfunc">glXQueryExtensionsString</b>(</code></td><td>Display *  </td><td><var class="pdparam">dpy</var>, </td></tr><tr><td> </td><td>int  </td><td><var class="pdparam">screen</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dpy</code></em></span></dt><dd><p>
                    Specifies the connection to the X server.
                </p></dd><dt><span class="term"><em class="parameter"><code>screen</code></em></span></dt><dd><p>
                    Specifies the screen number.
                </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
            <code class="function">glXQueryExtensionsString</code>  returns a pointer to a string describing
            which GLX extensions are supported on the connection. The string
            is null-terminated and contains a space-separated list of
            extension names.  (The extension names themselves never contain
            spaces.) If there are no extensions to GLX, then the empty string is
            returned.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>
            <code class="function">glXQueryExtensionsString</code> is available only if the GLX version is 1.1 or greater.
        </p><p>
            <code class="function">glXQueryExtensionsString</code> only returns information about GLX extensions. Call
            <a class="citerefentry" href="glGetString"><span class="citerefentry"><span class="refentrytitle">glGetString</span></span></a> to get a list of GL extensions.
        </p></div>
        {$pipelinestall}{$examples}
        <div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
            <a class="citerefentry" href="glGetString"><span class="citerefentry"><span class="refentrytitle">glGetString</span></span></a>,
            <a class="citerefentry" href="glXQueryVersion"><span class="citerefentry"><span class="refentrytitle">glXQueryVersion</span></span></a>,
            <a class="citerefentry" href="glXQueryServerString"><span class="citerefentry"><span class="refentrytitle">glXQueryServerString</span></span></a>,
            <a class="citerefentry" href="glXGetClientString"><span class="citerefentry"><span class="refentrytitle">glXGetClientString</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><div id="Copyright"><h2>Copyright</h2><p>
            Copyright © 1991-2006
            Silicon Graphics, Inc. This document is licensed under the SGI
            Free Software B License. For details, see
            <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
        </p></div></div></div>
